Valve housing and method of making same



Dec. 22, 1936. J, TAYLOR 2,065,035

VALVE HOUSING AND METHOD OF MAKING SAME Filed April 22, 1935 6Sheets-Sheet 2 J. H. TAYLOR 2,065,035

Dec. 22, 1936.

Filed April 22, 1935 6 Sheets-Shet 3 Dec 22, 1936. J. H. TAYLOR VALVEHOUSING' AND METHOD 0F MAKING SAME Filed'April 22, 17935 6 Sheets-Sheet4 pail/@mnnfames Had Tarj/07" v Dec. 22, 1936. J, H TAYLQR y2,065,035

VALVE HOUSING AND METHOD OF MAKING SAME Filed April 22, 1935 6Sheets-Sheet 5 /g 7/2 zeke-fof:

. James Ha Zjof" gif/f6 l sell" fw Y Dec. 22, 1936. J; H. TAYLOR VALVEHOUSING AND METHOD OF MAKING SAME Filed April 22, 1955 6 Sheets-Sheet 6Patented Dec. 22, 1936 l NiTl-:D STATES Parleur VALVE HOUSING ANDIWETHOD F MAKING SAME James Hall Taylor, Oak Park, Ill.

Application April 22, 1935, Serial No. 17,655

11 Claims. (Cl. 2li-157.1)

This inventionv relates "o valve housings, and line |0--i0 of Figure 9,showing one of the valve has to do with a gate valve housing of improvedguide strips in position;

construction and an improved method for prO- Figure l1 is a sectionalview taken substan- I ducing the housing. tially on line lI-ll of Figure12;

5 Ingeneral, my invention is directed to a. valve Figure 12 is alengthwise central vertical sec- 5 housing of simple construction, lightweight and tional view through a valve housing produced in adequatemechanical strength, and to a method accordance with my invention,illustrating the for producing the housing expeditiously and at mannerof welding together the housing sections; low cost and which reduces thenecessity of ma.- Figure 13 is a plan view of the completed houschiningof parts to a minimum, while permitting ing; 10 facing of the valveseats, giving ready access to Figure 14 is alengthwise verticalsectional view, such parts as have to bemachined and assuring on areduced scale, showing the completed housaccuracy in the seatingsurfaces of the valve ing and the valve therein and associated meansseats and in the disposition of the valve guide for operating the valve,parts being shown in 15 strips. Further objects and advantages of myelevation; and 15- invention will appear from the detailed descrip-Figure 15 is a transverse sectional view of the tion. completed housingand the valve and associated In the drawings: parts, taken substantiallyin the plane of line Figure 1 is a sectional View through two co- |5-l5of Figure 14, parts being shown in elevaoperating dies and a partiallyformed blank tion. 20 therebetween, illustrating a preliminary step in.The valve housing is formed in two compleforging one of the sections ofthe housing in acmentary sections which divide the housing at cordancewith the method of my invention; the median transverse plane thereof andare Figure 2 is a sectional view through the blank welded together attheir inner ends. Preferably,

.35 of Figure 1 and a die and a cooperating extrudthe sections of thehousing are formed by forg- 25 ing punch positioned for performing asucceeding ing from steel or other metal suitable for the step in theforging of a section, of the housing purpose. A billet of suitable sizeis rst forged to in accordance with myinvention; produce a cup-likeblank c from which projects Figure 3 is a view similar to Figure 2 butil1us|` a ange a inclined transversely of the blank,as

gn t-reting the succeeding step performed by the exshown in Figure 1.This is accomplished by suit- 3o truding punch and die of the lattergure; ably shaped cooperating upper and lower dies b Figure 4 is aninner ven'd view of one of the and d, respectively, having relativemovement,

. partially formed housing sections resulting from one toward and awayfrom the other, the upper the step of Figure 3; die conveniently beingthe movable die. It will 3;, Figure' is a sectional view through a pairof be noted that the recess formed in blank c flares 35 forming dies anda blank being formed thereby, upward, as shown in Figure 1, and flange ais of illustrating a further step of the method of my approximatelysemi-elliptical shape with its mainvention, parts being shown inelevation; jor axis extending transversely of the blank c0- Figure 6 isa, section taken substantially .on incident with the diameter thereofwhich passes 40 line 6 6 of Figure 5, parts being shown in elethroughthe highest point of the ange. This 40 vation; will be clear fromFigures 1 and 4. Blank c,

Figure 7 is a fragmentary sectional view similar formed in this manner,is then placed in a coto Figure 5, parts being shown in elevation,showoperating recess in a. die e, and a cylindrical exing the use of thecutting die for removing truding punch f, of less diameter than theupper the metal from the closed` end of the partially portion of therecess of blank c, is inserted down- 45 formed housing'section; wardinto the blank c, which is so disposed that Figure 8 is an inner endview of a housing secthe punch e is in contact with and parallel totionresulting from the forming and cutting opthe side of the recess ofthe blank adjacent the erations of Figures 5 and "7, showing the valveupper'portion of flange a, as shown in Figure 2.

guide Strips in DOSitiOn; The die e of Figure 2 may be the died ofFigure 1, 50

Figure. 9 is a fragmentary lengthwise central positioned as in Figure 2,or it may be another vertical sectional view of two housing sectionsdie.- 'Ihe punch f is then moved downward into positioned for weldingtogether, the valve guide the blank so as to extrude the metal thereofupstrips being omitted; ward along punch f, between the latter and theFigure' 10 iS a Section taken substantially on confining wall of therecess of vdie e, as in Figure 55 per portion off ,which, at one sidethereof, isinclined upward and outward away from punch f,

V as shown, the upper end of the hub being inclined transversely thereofin the same direction as, but

to a les's extent than, flange a, the lower end of the hub being closedby'an integral disc: y.

Due to this extruding operation, with resultant i0 ilow of the metallengthwise of punch f, the grain of the metal is so disposed that themetal fibres extend lengthwise of the resulting forging, particularly ofhub h from below ilange a. to the lower end of the hub, as indicated inFigure 3. Flash metal i is then removed from flange a, the result-` ingblank, viewed from its inner end, appearing as shown in Figure 4, fromwhich it will be noted that flange a. is of approximatelysemi-elliptical shape, as stated.

The blank shown in Figure 4 is then acted upon by upper and lower dies7c and m, respecqtively, in such manner as toshape 'ange a. to

form one-half of the body of the desired housing,

as in Figures 5 and 6; The upper die k has a depending guide siem o of asize to nu within hub h. of the blank, withits lower end above disc gwhen the dies are closed, and the lower die is provided with aconstriction p of the same diameter as .the interior of hub h, and anopening s of greater diameter .than and extending downward fromconstriction p. The dies k and m are then separated suiilciently towithdraw stem o from the blank and permit introduction of a cut,-

Y ting disc or die t into the hub h, after which the dies are againclosed. In this second closing of the dies, steino contacts cutting diet forcing the latter -downward and thereby cutting disc g from the lowerende-of hub h, as in Figure 7. The` housing section thus produced thenhas its inner edge' notched out at 'each side atlu, preferablybymachining, for-a distance extending downward approximately the lengthof a valve guide strip, as shown in Figures 8 and 9, and as will behereinafter explained more fully. This notching may be effected inany"othersui le manner and, if desired, may be performed uring theforging operation of Figure 5, the ,.fdies being appropriately formedfor this purpose, as will be readily understood by those skilled in theart.

I provide two housing sections Ifproduced as above, each of whichconstitutes one-half of the va1ve=housing and which, inthe completedhousing, are welded together at their inner ends,

' the line of weld corresponding to the transverse medium plane of thehousing. Each ofthe sec tions I comprises a tubular hub 2, the outer endof which is beveled at 3 for welding to pipe ends,

and a flange 4 integral with the hub and formed A to provide one-half 5of the body of the hous- (i0 lng. Each section I also comprises anintegral valve seat element 6 which. projects inward beyoud flange 4 andis disposed at a downward and inward inclination to the hub, as inFigure 9.

It is frequently necessary that the valve seat be provided with meansfor preventing wear and corrosion thereof. .The inner end of each of.

4vthe' seat elements 6 constitutes a valve seat, and, in the housing ofmy invention, I apply a wear and corrosion resistant surface to each ofthe 'lo valve seats. This I do by welding onto the valve seat a layer'aof a metal or alloy resistant to wear and, where necessary, corrosion,such as stellite. layer is applied to the valve seat and is thenaccurately ground to the proper degree of smoothness. preliminary.tosecuring together of thesesaoeaoss tions of the housing. Thesurfacing and nishing of the valve seats are thus performed underconditions which permit of ready access thereto, which is conductive toexpedition and facility in the perfomance of this operation whileproviding- 6 accuracy thereof.

After sections I of the housing have been completed, and the valve seatshavevbeen surfaced and finished in the manner above described, they aredisposed in endwise alignment with the inner 10 edges of anges l, whichare beveled at la, closely adjacent eaoh other and dening therebetween aV-shaped welding trough. The notches u dene slots at opposite sides ofthe housing, which slots are to be closed by valve guide strips, whichil will be referred to presently, so that the welding trough extendscompletely around the assembled'housing sections of Figure 9, from theupper edge of one side thereof to the upper edgeat the opposite side. 20

The valveseats dene a downwardly tapering passage therebetween, whichpassage receives a block 'I (Figures 11 and- 12) which also tapersretained thereby during the welding operation. 35

Sections I are restrained against `movement away from block 'I in asuitable manner, as byknown means effective to subject the sections topressure in the direction of the block. At this time the block contactsthe valve seats, seating 40 accurately thereon, the lower end of theblock being spaced above the lower end of the body of the housing, asshown in Flgure 12, the spacing of the valve seats then being sligthlyless than that required by the valve. The housing sec- 45 tions I andthe valve guide strips 9 are thus accurately held in assembled relationpreliminary to the welding operation.l Sections I arethen weldedtogetherby welded-in metal I2 which serves to unite the adjacent ends of thesections of the 50 housing. Also, during this welding operation, thewelded-in metal penetrates' intothe guide strips 9 and integrally unitesthem with the housing sections. The notches u dene slots in the sides ofthe housing, of approximately the same 55 length and breadth as theguide strips. The welded-in metal penetrates the guide strips for thegreater portion of the width of the outer surfaces thereof, asat I2a,Flgure 11, which assures any exceptionally strong mechanical unionbetween m, the guide strips and the housing, the welding of the guidestrips to the housing being accomplished simultaneously with and as apart of the operation of welding together the housing sections. Ifdesired, during the welding operation a chill 65 strip of copper (notshown) may 'be disposed within the housing and overlying the line ofweld extending between the lower ends of the guide strips 9. Thefunction vof this chill strip is known in the art and n eed not bedescribed in'detaiL 70 After the sections I have been thus weldedtogether, aring I3, comprising a bolting flange Il, is welded to theupper end -of the body of the housing, at I5, the. adjacent ends of thering and the housing body being beveled to denne a V4 75 shaped weldingtrough or groove, as shown. During this welding operation, the taperedwedge block 'l may remain in position. After the welding operation hasbeen completed and the parts have cooled sufficiently, block 'i may, asa nal sizing operation, be forced downward into the dotted line positionof Figure 12, to a proper extent to space the Valve seats accuratelyconformably to the valve intended to\be used therewith. This also amuresthat the valve seats will be disposed at the proper inclination, sincethe taper of the block corresponds to that of the -valve. Since thevalve guide strips 9. are accurately formed in conformity with theguideways of the valve, and are held accurately in position during thewelding operation, no machining of these guide strips is necessary.Further, the final forcing of the block,y 'l inwardly or downwardly ashort distance between the valve seats assures that the latter andtheguide strips will be disposed in accurate relation for reception of thevalve.

In many instances, the hmt incident to welding of ring i3 onto the topof the housing body will not be sufiicient to aiect the accuraterelation between the valveseats and the guide strips. In such cases, ifdesired, the block 'i may be forced into the dotted line position ofFigure 12, for finally and accurately spacing and disposing the valveseats, and then completely withdraw from the housing-after which ring I3may be welded on. Also, if desired, instead of effecting the nal spacingof the valve seats by forcing block 'I from its full line position ofFigure 12, this block may be Withdrawn and replaced by a second blocksuitable for the purpose. This is an obvious variation of the abovedescribed method, which may be resorted to in certain instances, but Iprefer, in general, to employ a single spacing block, as previouslydescribed.

It will be vobserved that I have shown and described valve seatsdisposed for cooperation with a tapered gate valve, but it will beevident that I can also use parallel seats, in which event this nalspreading action which I have just described may be effected by a pairof pressure blocks whichare spread under pressure.

Forging the housing sections in the manner above described isadvantageous as conducive to accuracy and rapid production, withattendant relatively low cost. A further advantage of forging thehousing sections is that the metal is worked and compacted so that thesections produced by forging may be relatively light while possessingadequate mechanical strength.

The extruding operation shown in Figure 3 has the advantage that theends of the metal fibres are exposed at the beveled ends 3, of hubs 2 ofthe housing sections. The housing is particularly suitable for weldinginto a line of piping, comprising pipe ends i6 beveled to define, withthe adjacent end of the housing, V-shaped welding troughs which receivewelded-in metal i1. Since theends of the metal fibres are exposed at theends of the hubs 2, as indicated in Figure 14, and as will be clear fromFigure 12, the pipe ends are welded to the ends of the metal fibresextending lengthwise of the hubs of the hous-' ing. This assures anexceptionally strong union between the pipe ends and the housing, andthe hubs oier maximum resistance to tension, bending and twistingstresses to which they are sub- -jected in use.

After the housing has been completed in the manner above described, abonnet le is bolted upon ange ita suitable gasket being interposedbetween the latter flange and the flange of the bonnet. A valve stem i9screws through the head of bonnet I8 and operates through a suitablestumng box 2@ in the lower portion of the bonnet. The lower end of stemi9 is attached to a gate valve 2i of known type, in a known manner, forrelative rotation for raising and lowering the latter. A hand wheel 22is suitably secured upon the upper end of the valve stem. The gate valve2| is provided with guides 23 which t about the guide strips 9 forguiding the valve during operation thereof.

What I claim isz- 1. A gate valve` housing comprising two complementarysections originally formed separately andeach comprising a tubular hubhaving its inner end inclined and forming an integral continuous valveseat, said sections being welded together along approximately the mediantransverse plane of the housingwith said valve seats spaced apart anddefining therebetween a tapered valve passage. and valve guide stripswithin the housing at opposite sides thereof and i secured theretoI bythe weld between said sections.

2. The method of producing a valve housing, which comprises forming thehousing in two complementary sections separated at substantially thetransverse median plane of the housing, eachcomprising a tubular hubhaving an integral continuous valve seat at its inner end, surfacing and,nishing said valve seats prior to securing said sections together,disposing said sections in endwise alignment, inserting a spacing blockbetween said seats in seating contact therewith, confining valve guidestrips between said spacing block and the sides of the housing so as tobe accurately retained in position thereby, and welding said sectionstogether and to said guide strips.

3. The method of producing a gate valve housing, which comprises formingthe housing in two complementary sections separated at substantially thetransverse median plane of the housing, each comprising a tubular hubhaving an integral continuous valve seat at its inner end, surfacing andnishing said valve seats prior to securing said sections together,disposing said sections in endwise alignment with said valve seatsdefining a passage therebetween, inserting a spacing block between saidseats in seating con-l tact therewith, welding said sections together,and after completion of the weld spreading said valve seats by pressurefor nal sizing thereby assuring that the latter are accurately spacedfor cooperation with a correspondingly shaped and sized valve.

4. The method of producing a gate valve housing for use with a taperedgate valve, which cornprises forming the housing in two complementarysections separated at substantially the transverse median plane of thehousing, each comprising a tubular hub having an integral continuousvalve seat at its inner end inclined substantially similarly to oneseating surface of the valve, surfacing and finishing said valve seatsprior to securing said sections together, disposing said sections inendwise alignment with said valve seats dening a. tapering passagetherebetween, inserting.

between said valve seats and in seating contact therewith a taperedspacing block, welding said sections together while restraining themagainst movement away from said block, and after completion and coolingof the weld forcing between said valve seats a block havingthe sametaper as the valve and thereby accurately' spacing and ing, whichcomprises forging a cup-shaped blank provided ladjacent its upperend'with an outwardly extending flange inclined transversely o! theblank, said blank being formed with a recess tapering toward its lowerend, subjecting the of the blank adjacent the upper portion of said'resulting blank to an extrudingl operation by a holding die and anextruding punch entering the recess of the blank and ot less diameterthan the upper portion of said recess, said punch "being in contact withand parallel to the side of the recess ilange, thereby producing anelongated tubular hub closed at its lower end and having its upper endinclined in the same direction as said ilange, removing the metal fromthe lower end of the hub and bending saidl'ange toward the upper end ofthe hub tolorm a housing body element projecting beyond said upper endof said hub. thereby producing one section of the housing, and weldingtogether in endwise alignment two of said sections at the edges of saidbody' elements and along a line corresponding to the transverse medianplane oi' the resulting housing.

6.v The method of producing agate valve housing, which comprises forginga cup-shaped blank provided adjacent but spaced from the upper endthereof with an outwardly extending angeinclined transversely of theblank and' of approximately semi-elliptical shape, said blank beingformed with a recess tapering toward its lower end, subjecting the blankto an extruding operation by a holding die' and an extruding punchentering the recess of the blank and of less diameter than theupper'portion ofj'said recess, said punch being in contact with andparallel to the side of the recess of said blank adjacent the upperportion oi' said ilange, thereby producing an elongated tubular hublclosed at its lower end and having its upper end inclined in the samedirection as said flange, removing the metal from `the lower end of thehub and bending said flange toward the upper end oi' the hub to form ahousing body element projecting beyond said upper end of said hub,thereby producing onesection of the housing, welding vtogether inendwise alignment two of said sections at the edges of said bodyelements and along a line substantially corresponding to the transversemedian plane o( the resulting housing, and. welding Avalve guide stripsto the inner faces 'of said body elements, at opposite sides thereof, inthe operation of welding said sections together.

'1. A gate valve-housing comprising e plementary sections originallyformed separately and each comprising a tubular hub, said sections-normal to the lengthwise axis of said housing ing said sectionstogether and simultaneously" .welding said guide strips to saidsections.

9. The method of producing a valve housing, which comprises forging ablank with a hub portion and an outwardly extending skirt, subject- I,ing the hub portion to an extruding operation with apunch and a holdingdie thereby producing an annular tubular body closed at its lower end,removing the metal from the lower end of the body so formed to produce ahousing section, and welding two sections so produced together inendwise alignment along a line substantially vnormal to the lengthwiseaxis of vsaid aligned sections.

l0. The method of producing a valve housing,- which comprises forging acup-shaped blank provided with an integrally attached outwardly'xtendedskirt, subjecting the resultant blank to an extruding operation by aholding die and an extruding punch entering the cup-portion oi' theblank, thereby forming an elongated hub closed at one end, bending saidskirt toward the upper end of said hub to form a housing body elementprojecting beyond the upper end of said hub, thereby Iproducing onesection or the housing, and disposing two housing sections so 'producedin endwise alignment and welding them together along a linesubstantially normal to the lengthwise vaxis of said aligned sections.y

11.' The method of producing a valve housing, which comprises forging acup-shaped blank provided' with an outwardly extended skirt, subjectingthe resultant blank to an extruding operation by a holding die and anextruding punch entering the cup. portion of the blank, thereby formingan elongated hub having a disc extending across one end, bending saidskirt toward the other end of said hub to form a housing body elementprojectingbeyond said other endo! said hub, thereby producing onesection of the houstogether along a' line substantially normal to the slengthwise axis of said aligned sections.

JAMES TAYLQR.

